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Halogen-free high flame-retardant cable material, cable and preparation method thereof

A cable material and high flame-retardant technology, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of aging resistance, stress cracking resistance, poor mechanical properties, etc., to facilitate processing, ensure flame-retardant performance, and improve mechanical properties. performance effect

Active Publication Date: 2018-02-02
杭州万瑞达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a halogen-free high flame-retardant cable material, which solves the defects of the existing 125°C irradiation cross-linked halogen-free high flame-retardant cable material with poor mechanical properties, aging resistance and stress cracking resistance

Method used

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  • Halogen-free high flame-retardant cable material, cable and preparation method thereof
  • Halogen-free high flame-retardant cable material, cable and preparation method thereof
  • Halogen-free high flame-retardant cable material, cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A halogen-free high flame-retardant cable material, the components and parts by weight of the cable material are as follows:

[0023]

[0024]

[0025] Composition of aluminum hydroxide and magnesium hydroxide, methyl vinyl silicone rubber, tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, thiodipropionic acid Dilauryl ester, polyethylene wax, zinc stearate, silane coupling agent, fumed white carbon black, and triallyl isocyanurate were mixed in a high-speed mixer for 5 minutes according to the stated ratio, and then resin and engineering The masterbatch was mixed for 3 minutes, then put into an internal mixer for internal mixing, and waited until the material temperature reached 140°C, and finally granulated by a two-stage extruder to obtain the halogen-free low-smoke high flame-retardant cable material.

[0026] The performance test result of the cable material of this proportioning is as shown in table 1:

[0027] Table 1

[0...

Embodiment 2

[0030] A halogen-free high flame-retardant cable material, the components and parts by weight of the cable material are as follows:

[0031]

[0032]

[0033] Composition of aluminum hydroxide and magnesium hydroxide, methyl vinyl silicone rubber, tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, thiodipropionic acid Dilauryl ester, polyethylene wax, zinc stearate, silane coupling agent, fumed white carbon black, and triallyl isocyanurate were mixed in a high-speed mixer for 10 minutes according to the stated ratio, and then resin and engineering The masterbatch was mixed for 5 minutes, then put into an internal mixer for internal mixing, and waited until the material temperature reached 150° C., and finally granulated by a two-stage extruder to obtain the halogen-free low-smoke high flame-retardant cable material.

[0034] The performance test result of the cable material of this proportioning is as shown in table 2:

[0035] Table 2

...

Embodiment 3

[0039] A halogen-free high flame-retardant cable material, the components and parts by weight of the cable material are as follows:

[0040]

[0041] Composition of aluminum hydroxide and magnesium hydroxide, methyl vinyl silicone rubber, tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, thiodipropionic acid Two lauryl esters, polyethylene wax, zinc stearate, silane coupling agent, fumed white carbon black, triallyl isocyanurate mix 7.5min in the high-speed mixer according to the described ratio, then add resin and The engineering masterbatch was mixed for 4 minutes, then put into the internal mixer for internal mixing, and waited until the material temperature reached 145°C, and finally granulated by a two-stage extruder to obtain the halogen-free low-smoke high flame-retardant cable material.

[0042] The performance test result of the cable material of this proportioning is as shown in table 3:

[0043] table 3

[0044]

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Abstract

The invention discloses a halogen-free flame-retardant cable material. The cable material comprises the following components in parts by weight: 85 parts of basic resin, 15 parts of engineering masterbatch, 150 to 180 parts of a composition of aluminium hydroxide and magnesium hydroxide, 3 to 5 parts of processing aids, 1 to 2 parts of an antioxidant, 1 to 2 parts of a lubricating agent, 1.5 to 3 parts of a coupling agent, 5 to 8 parts of a reinforcing agent and 2 to 4 parts of a crosslinking agent, wherein the basic resin is combination of two ethylene-ethenyl ethanoate copolymers with different ethenyl ethanoate contents; the ethenyl ethanoate content of one ethylene-ethenyl ethanoate copolymer is 40% and the ethenyl ethanoate content of the other one ethylene-ethenyl ethanoate copolymer is 14%; the weight component ratio of the two ethylene-ethenyl ethanoate copolymers is (55-65):(20-30); the engineering masterbatch is an EVA grafted maleic anhydride compatilizer. Under the cooperative use of the combination of the two ethylene-ethenyl ethanoate copolymers with different ethenyl ethanoate contents and the EVA grafted maleic anhydride compatilizer, the defects that the conventional halogen-free flame-retardant cable material has low mechanical property and does not resist aging and stress cracking are overcome.

Description

technical field [0001] The invention relates to the field of cable manufacturing, in particular to a halogen-free high flame-retardant cable material, a cable and a preparation method thereof. Background technique [0002] When the cable is under the load current, it will generally generate heat. In addition, the cable is generally routed in a closed environment, so it is easier to keep the temperature of the cable high, and it is easy to cause a fire at this time. Therefore, general cable materials are required to be flame retardant. In the past, most electrical materials used halogen-containing flame-retardant materials. Although they have excellent flame-retardant effects, they will release a large amount of toxic fumes when burned, which will cause great harm to the human body and equipment. Recently, with the stringent environmental regulations, halogen-containing sheathing materials are gradually replaced by low-smoke halogen-free flame-retardant sheathing materials. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08
CPCC08L23/0853C08L2201/02C08L2201/22C08L2203/202C08L2205/025C08L2205/035H01B3/441H01B7/295C08L51/06C08L83/04C08K13/02C08K2003/2227C08K2003/2224C08K5/1345C08K5/372C08K5/098C08K3/36C08K5/3492C08K5/54
Inventor 兰乔波
Owner 杭州万瑞达新材料有限公司
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